Pulley-adapter



C. F. mcKEnsoN,

PULLEY ADAPJ'ER.

APPLICATION mso SEPT. 14. ma.

Patented Mar. 15, 1921.4

1. MW... Haw 1 UNITED STATES PATENT OFFICE.

CHARLES F. N ICKERSON, 0F READING, MASSACHUSETTS.

PULLEYADAPTER To all 'whom 'it may concern:

Be it known that I, CHARLES F. NionnnsoN, a citizen of the UnitedStates, residing at Readin in the county of Middlesex and State ofassachusetts, have invented new and useful Im )rovements inPulley-Adapters, of which t e following is a specification.

The chief object of this invention is to adapt the driving pulley on themain shaft and the driven pulley on the fan shaft of the engine of aFord automobile, for engagement with and connection by a resilient roundbelt made from helical wire, so that a resilient round belt may beconveniently substituted for the ordinar flat nonresilient belt withwhichsuci engines are customarily provided, Without the removal of theusual lat-beltengaging pulleys.

I attain this object by applying adapters to the said driving and drivenpulleys, each ada ter constituting an enlargement of the ul ey to whichit is applied, and being orrned externally to engage a helical wire beltand provided with means whereby it may be securely clamped upon thepulley,

no change or modilication of the latter beingVV re uired.

f the accompanying drawings, forming part of this specification:

Figure 1 shows in end elevation the fan shaft pulley and the main shaftor driving pulley of a Ford engine equipped with adapters embodying theinvention, and a helical wire belt engaged with said adapters,

Fig. 2 is a section on line 2-2 of Fig. l.

Fig. 3 is a. section on line 3-3 of Fig. 2.

Fig. 4 is a side elevation of the fau shaft pulley without itsA adapter.

Fig. 5 is a side view of the main shaft pulley without its adapter.

Fig. 6 is a side view of the fan shaft pulley ada ter.

Fig. is a side view of the main shaft pulley adapter.

Fig. 8 is a sectional view of a portion of the helical wire belt.

The same reference characters indicate the same parts in all of thegures.

In the drawings 12 represents the driving pulley, usually attached tcthe main shaft 13 of a Ford engine, said pulley bein formed to engage aflat leather belt, an its 'periphery being somewhat convex or crowned,as shown by Figs. 2 and 5.

14 represents the fan shaft, which is par# allel with the main shaft 13,and is provided Specification of Letters Patent.

adapted to run upon the pulleys and com,u

munieate motion from the driving pulley 12 to the driven pulley 16.

` In carrying out my invention, I apply to each of said pulleys anadapter composed of two arcuate sections, prov1ded with means wherebythey may be confined upolnthe pulley, said sections collectively formingan nnnulus, shaped internally to coliform to the exterior of the pulley,and externally to engage a round belt,

19, 19 represent the sections of the adapter applied to the drivingpulley 12. Each section 19 has a semi-circular internal face, which istransversely concave and conforms closely to a portion of the crownedexterior of the pulley 12, to prevent lateral` dis lacement of theadapter when it is clampe as hereinafter described on the pulley. Theexternal face of each section 19, is provided with a groove 21, formed.to engage a hclicalwire belt 22. The sections 19 are pnovided withPatented Mar. 15, 1921. Application led September 14, 191B. Seriallo.254,111.

coupling means, whereby they may be se- A curely clam Ad on the beingembodied in ears 23, ormed on the ends of the sections, at oppositesides of the grooves 2l and threaded bolts 24 inserted in coincidingorifices in said ears, the orifices 1u ears of one section beingscrew-threaded to engage the bolt-threads.

25, 25 represent the sections of the adapter applied to the drivenpulley 16. Each of said sections has a semi-circular inner faceconforming closely to the periphery of the pulley 16, between theflanges 17 thereof, as shown by Fig. 2, said flanges preventing lateraldisplacement of the adapter. The sections 25 are provided withbelt-engaging grooves 26, and with ears 27 and bolts 28, whereby thesections may be clamped upon the pulley 16.

It will now be seen that the described adapters constitute enlargementsof the pulleys to 'which they are applied, and enable said pulleys to beconnected by a. helical wire belt, the relative proportions of thepulleys being the same as before.

The application of the adapters to the ulleys does not require anychange or odigcation of the latter, so that the ow r of a Ford car maysubstitute a resilient ound belt for the usual non-resilient flatleather pulle said meansA belt by sim ly a plyin the adapters to thepllleys an applying ne round belt to the a e ters.

e belt 22 can be made of a single length of helically coiled wire, theends of which are coupled together by a dumb-bell shaped member 30, uponthe enlarged ends of which the end convolutions of the wire are closedor contracted as shown b Fig. 8. The contrected convolutions are ree toturn or slip on Athe enlarged ends of the coupling member.

A belt, composed of a length of helicallycoiled wire-and adumb-bellshaped coupling member engaged with contracted convolutions ofthe belt, will form the subject of a separate application for LettersPatent to be filed by me.

l claim:

1. A round-beltenguging pulley adapter comprising a pair of arcuatesections, each formed as a single nece, and having a semicircularinternal ieee conforming to one half of the periphery of aflat-belt-engaging pulley, end a Semi-circular external groove openingat its ends on the ends of the section and formed to engage a roundbelt, said sections being provided with coupling means external to thegrooves therein, whereby the sections may be clamped upon a pulley toform a continuous two part ennulus having a continuous external groove.

2. A round-belt-enfgaging pulley adapter comprising a pair o arcuatesections each formed Aas a single piece, and having a Semicircularinternal face conforming to one half of the periphery of allat-belt-engaging pulley, a semi-circular externalY roove opening atits ends on the ends of t e section, and formed to engage a round belt,epertured ears on the section-ends at opposite sides of the groove-ends,and bolts engaged with said ears to clamp the two sections on e pulleyand maintain the grooves in registration with each other, so that theassembled sections form a continuous externally grooved two partannulus.

3. A pulley adapter substantially as specified by claim l, the internalfaces of said sections being concave and eonformin r to the convex orcrowned periph'pry of a riv ing pulley to prevent lateral displacementof the annulus formed by the sections.

In testimony whereof l have ailixed my signature.

` CHARLES F. NICKERSON.

